Sorry your dealing with that
Is your "current" OB not in her office any longer?(I would just go there if she is). Was she connected with the hospital, as in, would they have access to your records? That's how it was with my DD1. I could get copies through the hospital. Or just ask hospital administration their advice to get in touch with the OB and how to get your records. Since they employed her, I would think they should be able to help in some way(you might have to be persistent).
If it continues, I might try another OB who would be more understanding of the situation. HTH some